X    vacuum evaporating apparatus



j E. T. www1 VACUUM BVAPRATING MPARATUS,

FaQ-85,31@

2 Sheets-Sheet l;

Patented Nov. l, w92.

v@Jo Model.) n I 2 Sheetg-Sheet 2.

H. T. YARYAN. 'VACUUM BVAPORTING A ieee UNITE ,v im, we my e @derriere if i HMER YARYAN, OF TOLEDO, QHE, ASBGNUR TG Film YARYMN ii PANLOP MEUHANiCSVILL, NEW YORK.

` VAQUUM EJAFRWNG APFAHTUS.

SPECIFICATIN forming; pari: of Lettere Patent No, $85,315, dated revember i. Application flied February T, 1893. Serial No. BSOrGSSu (No moda.)

To @ZZ 'whom zit may 00m/erm .Be 1t iznowii met I, Holme T. YARYAN, a, omzen of the Unied Seiee, residinget Toledo,

iii the county of Leens ami Siete ef Ohio, have 5 Virri/exited ee. ne neweiid; useful imprevemeiiizs m Evepoletingf Appereiis; end I do hereby deoiere ino following io a fuii, elem", sind exeetdeeeriptioxi of the iiireniom, euch es wili enefo'e others eiried in the eri io whei iieppereine to make and use the semei My inveniou relates to appare-trie' of that Class described in Leiters 'Pa-Lent granted to me, No. 300,185, det-ed Juneio,

vdeseribef in. thai patent :m emporeting I5 apparatus in whieh ve coi-i. of pipe ine'loeed in a steam-drum, wlieix :supplies the hea-t 'se quired to evaijioree iquid flowing through the eoii. The liquid. io be 'evaporated eneie at the uppezend ef the eeii and, with the ve- 2e porgenemted and constantly increasing in E ;voieme, iiowe through the coil md is die eiierged iut-o e seper #..ing trop or chamber, from which ile vaper ce. ed or eiiowedto pese off by one eoridoi md the more or less concentrated iiquid by another.

dated December 2S, V536, I described, en emp,- oreting; apparatus in which several straight pipes ere plziee horizoir'oaiiy and arranged in series in n, vertical piene and so oouneeed end io emi ae izo form one iougpiperiiieh by ite deuoiing' beek and forth upon itself enbeieutiaiy en equivalent to ine eoii described' in Pat-eut 300,3851` i simeri in. this; mi? eut, No. 355,200, that che ezipeeitjf of eireii coils cannet be greet-1y increased by increasing to any considerubie ement either che diameter or the length of the pipe cmlstiiuing the coils, for reasons therein eet forth, and I pointed out theimportmieo of increasing the diameter' of the pipes gmduaily from the niiet-pipe to the outlet-pipe of the eoii to provide for the constantiy-ieoreesiug Volume of ihe contents of the coil as the eveporetiou proceeds. In this patent I suggested theta standard vai porZing-eoii would oe about seventy-five feet in length, stariiog ef; the inlet with e diameter of about two emi oneiieii ieeiaemincreasing grad nelly io ediemeter of eeouiafomr inehesoe Le oulet. in e coil ef these dimmi;- sione the aree et the iiiiet '-riii be tohe area.

l lninished heein ai the eiitet as are the squares of tere ofthe tubes etiiieinieteud amie f es six and one-fourtii te sixieemmaofi if-:r .r renie of gi"M ieugtiis of tube reihe ieiei'eni g5 oute @mis Wiif. he io eaeh miner in i eeen@ ratio; rmi inasmuch iie eireiinngvreww ei tubes are proporiiomi ti miiee'ieie not to he emmree of iieirifemeere ii 2:5 2: to eee time Jie heer-ings eurfeeee oi' i is, ivenghe of iube et the oyiposiie eerie of 1i standard eoii, Wii oe eeeii other two emi oue-iieif iso foiiroeiyaiic'. ooiliike the on tenis,

ee six, emi one-fem" i. to eixbeeu. i, me numerical ratio beween the eiir'eee'zia emile of" of egivei ieiigth emi iis @epa-einge in 'eiioio inches i mi misiles :ie ite die-meter is iai ii; foiiews -hat the healinge'ieieiiojf of' e mi v, with reference no iteeubieeepeeity diiiiiiieii es the diemeer is increased. .er univie inch of Weiter when converted into reiger ei' eiii11eepherie pressure oeeopiee ai space oi leem e, cubic foot, Eind. tiwere'fero to provide fer the increase oi volume of the eoeien-s of e. eoii by veporizot-ioii es it meres foward he die" 'j charging end 'i suggested in my fermer pat ent a, gradual increase ivi the diameter o1? Neef tubes constituting ille eoi toward the diemargine emi; but the increased eepabiiy for the ovramf discharge of the com the eeil lius :fit-mi ifi ereeeee oonteis'e of the ei 'I have in the eoi i this aipp'iezition prcwideo if Lr. t, crease in ihe eepeeiiy oi eoi ai distances from its receiving emi. notbyinoreesing iie dimaieer of ihe tziinee eox'lstituting the eoii,blii iiyiiividing teem et. intervals into my desired number of braiieii tubes each prefere-bly of the seme diameter mi the inlet er initial pipe, time inerefieing boih the heating-Surface of the coil and .its capability to permit e free AFlow uid dislmrge of its contents.

,Figure l of tiie r'li'nwiiige shows e iiorizoem Lei lozigticiinai eeotimi of m1 apparatus eoiitaining tebeo arranged izieeeiions whieh form :m equivalent so 2i coii, whereby I seeure ihe advaiiiegoe Wiioii have eet forth. Figs. 2, 55,4,211161 shew @rees `cations of elle Lubes miren on linee ur, .11, 1j-,end I Show this een onine contents struction for the sel-:e of elearness. In practice ine construction shown in Figs. 6, and 8 of lie drawings will be preferable. Fig.

` reyresents o. vertice-l longitudinal section of en e ei-pointing cylinder ne-oiied series of evziporniing-Lunes. Fig. 7 represents en end view f the cylinder et the discharge end of the tubes with the eover plete of the .returnliend liead removed. Fie. 8 represents en end view at the front end of the cylinder itil tile eo'iei-iil.ote removed.

The apparatus shown in Fig. l consists oi" e heating chamber or ojfli'nder 1?., lui-ving si liend or tube-sheet e" ai) one end end ziy tnoe-slieel; el nt theother end. The inlet or initial. evaporeting-tnbe ("1 is suitably set in the onlie-sheet e', so is to .Ecrin nr tight joint ond prevent lealinge of sten/in fronitne limiting-cyl inde.:- around it, and the f'lischerge-tnises o, il lis, and Zr being similarly sci in tlie tube-snoei: al. A pipe Pis provided for the admission of steam or other heating iiiedinin to die cylinder B2 and n pipe@ for lio Withdrawal of waiter of condensation. A soigizireting-elizim ber A may be connected to the discharge end and provided arieh dank-plates o, witii .fi vsponon let D2, and with n. liquid-outlet 5,", sliown in i3,

containing the conllie liquid lo lie eve-poriieii enters the eiiipai-nine through the tube This tube delivers its contents into resection consisting; oi two branch iiibes (2 and lf2, ',viioli discharge into n sect-ion composed of three brencii tubes 3, o4, il, wiiioli in turn conneets witii and discharges its contents into section coin-- pose-fl of four oli tubes (1f, o?, bg, :ind if, Willen ilisiifonrges is eontents into tlie semireting-elininber .it will be apparent eli-an inspection of tiie crees-sections of the tubes :in Figs. 3, 4, and that ii? the tiibeii l) Z2 b2 are ot eqiiei length illie cubic coi'iteiis of the section composed of tubes 71' and b2 is twice tlie oi the iniiiel tub-e o and tiint its lientingeiirface is twice that of the initial tulle; the cubic contents of tiie section eoniposed ot' tubiis oliieiid Zi@ is three times that. of the initial time and hosting-surface three times that of the nl tube, and 'the eubio is o tlie section composed of tiioes o5, lf, end o" is four times that of tho initial julie and its iientngI-snrinoe also four times that of lie initial tribe, By this eriniigeinoiit of tubes, therefore, tlie iie:.itiiigsiiifice oft the apparatus increases directly the capability' er' the tnbes to accommoder-'re die flow sind discharge of their oontents is increased.

'.Viie initial tube, instead of' discharging; into a se 'ion composed of tivo brooch tubes, as shown, may ci'isclnirge into :i section composed oi any desired number of tuiles, :ind yet thc relie .in my given section between tlie ot the tiiiics ind their 'coinl einen .nestingsurface will lio preserved. '"lliiiis ning tieve se ,ions which, instead of inni' :ig tenis in tlic iii-offres sien i :3 :is silo-Wn in l, iiiny increase l i i l i l l i l pipe l to the ini esse-i5 in the progression l 2 4 S, tim., and t-lie lienting-snrfece will increase in the saine progression.

In Figs. 6, '7, and 8 I have shown o construction which will be found preferable in practice lo that shown in Fig. l.

This apparatus consist-s of a heating-cylinder B2, containing the evnpoi'ating-tiibes b b Z22, &c which are siiitziblysei; in the tubeslieets e end d et each end, so as to make tight joints. The initial tubo Zi discharges into n section composed of two tubes, which are arranged parallel to it, connection lietween the initial. pipe and the section being made by the employment of the construction described in ,Letters Petent granted to nio lila-y 22, i888, No. 383,38l-that is to say, by return-bend liezids C2 and M, provided with partitions 7i; Z, wliieli when the cover-plates K and L are in place i rm cells n n n, die., and o o o, etc.

The return-bend iioziils C2 and lli are of triangular forni, and nach is with an apex it the top. "ilie hood C2 is divided by liorizontal plates/l; into cells n 'o' n li 72, its shown in Fig. S, sind is closed 4by the outer plete K, which riveted or'bolted to its enter iienge. The bend is seem-ed by its inner flange to the tube-sheet e', and the partitioniilotes 7c are fitted to marke tight joints against; suoli tube-sheet, so as to forni tient cells oonneotiug the adjacent ends of horizontal rows of tubes. The i'etiiin-iiend lief-id M is secured to tlie tube-slieet/ Yind is provided with liorizoiital partition-plates Z, dividing it into oeils o o o of" 0, and is closed by the plate L. 'llio liquid-supply pipe l connect-s with the oell n of head C2, the pinto K heving zin Opern for siici'i purpose. Plate l. of the inner iieed M is provided near its bottoni with e horizontal opening oinleading from the bottoni cell o"",to permit the discharge of vapor :ind liquid from the lower set of tubes Z237 to Z242, inclusive. A separating-chamber A2 may be oonneeted to the apparatus when it is desired to separate the liquid ind vapor, into which the lest seriesoi tubes in the eoilslizill discharge. Ii, is shown in Figs. G, 7, and as provided. with dnslbplzites cz. o, o liquid-discharge pipe g', and e Vapor-outlet Dfi.

According to this my preferred const-rnciion and arrangement; oi' the eviiporfit-ing'n tubes, the inlet or initial evnpoi'nting'tiibe l; conneots tlie cell is, with the cello and two tubes b und b2 oonneot cell o with cell n', lieing equivalent ton- (livisionof tube l) into two neet cell it with cell o. Tliree tnbos L, o7, and o* connect cell o with oeil n, and so on, nii increasing number of tubos connecting. the successive cells. "liie liquid to be evaporated. lows from tne Simply-tank tnroiigli supplytiol pipo Zi of tiie series, and thence through eight sections of branch tubes, ivlieiiee the liquid and vapor are f iscbziiged. The sections of ille oiiiporotiiigcoil in this IIC 

